(Steinbruch Höwenegg, Immendingen, Hegau, Baden-Württemberg, Deutschland)
Miarolitic cavities in a lower tertiary nepheline-basalt.
Located about 3 km south of Immendingen.
Closed in 1979; a protected area since 1983. It is prohibited to collect minerals.
Refs.:
- Der Aufschluss 1981(4), 130-134
- Tschernich, R. (1992), Zeolites of the World, p.42
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Map Reference: 47°54'36"N , 8°44'50"E
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Mineral List:35 entries listed. 25 valid minerals. 1 type locality (valid mineral).
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